Today’s tractors run cleaner than ever due to the increasing emissions standards from the EPA. Yanmar tractors can meet and exceed these increasing standards thanks to the DPF. The DPF has been used by many diesel-fueled trucks since 2007. The device catches and traps soot (unburned fuel) to be burned out at a later time such as while the tractor is carrying a heavy load or undergoing a regeneration cycle. The soot is burned out anytime the exhaust temperature is elevated.
You learned the process of regeneration and how that temporarily changes the operating settings of the engine to generate extra-high temperatures in the DPF to combust and consume the engine exhaust products (pollutants) that accumulate in the DPF during normal engine operation. You also learned that the Yanmar process has the perk of allowing the customer to maintain complete control over the tractor and can continue working normally with no power loss or engine speed limitations during a normal regeneration process.
While the EPA mandates the DPF technology lasts 3,000 hours, it has been proven that the DPF lasts exponentially longer contributing to a long, clean, and happy life for your tractor. After about 3,000 hours, the DPF will need to be cleaned by first being removed from the tractor then sent off to the Yanmar Reman program where it will be cleaned by being “baked” in an oven to remove the excessive ash load (the remains after the soot has been burned out during regen). A Diagnostic Trouble Code or DTC is what indicates that the ash build-up in DPF too high.
As you can see, the Diesel Particulate Filter is a very smart piece of technology and a clean contribution to your Yanmar tractor. Thanks to the DPF, your tractor is kept clean as well as your to-do list.
To help make this potentially difficult task easier, use these methods from experienced tractor operators. (Wearing gloves while doing PTO connections is another smart tip to help avoid cuts and scrapes.)
First, make sure everything is ready for a PTO connection to happen (reading the tractor and implement ops manuals is the key to knowing the right settings on both machines).
Most tractors allow you to put the PTO shaft on the tractor into a neutral position. This ensures the tractor PTO output shaft will spin freely, making correctly aligning the two shafts’ splines much easier.
If you are connecting a 3-point-mounted implement, take care that the 3-point hitch is in the full down position to avoid getting accidently crushed if someone was to inadvertently move the position lever. The hitch and implement can lower even when the engine is turned off. If you can’t get the PTO shafts to align with the 3-point implement in the full-down position, you may need to remove the drawbar. Often removing the drawbar is a good idea in general when using PTO-powered 3-point implements. This helps avoid damaging the PTO shaft due to the shaft striking the drawbar when the implement drops to the lower travel limit of the 3-point hitch. Check the amount of clearance between the PTO shaft and the drawbar before you begin using a PTO-powered 3-point implement.
If your tractor PTO does not have a neutral setting and the tractor PTO shaft remains locked when the engine is turned off, you might need to mount the implement to the 3-point hitch, raise it and lock it into the raised position before shutting down the tractor – this way you should be able to carefully rotate the implement shaft to align the splines.
Take extra care to keep fingers out of the implement PTO shaft universal joint here as there may be a bit of momentum behind the implement shaft’s rotation.
Next, the two PTO shaft ends should be clean. Dirty and dry splined shafts can be nearly impossible to hook up. The splined PTO shafts are designed to have a tight fit. Just one small piece of grit from the soil or some crop debris can stop the shafts from sliding together.
Next, to help the two tight-fitting pieces of metal slide together, coat both of them lightly with grease. Clean grease from a clean source is preferred, but your experienced tractor operators know how to improvise in the field. Once lubricated, the two splined shafts should slide together much more easily.
On compact tractors and their implements, the PTO connection is not very far off the ground. It can be easier to kneel to handle the PTO connection. Kneeling and lifting the weight of the implement PTO shaft both can go more easily if you’re kneeling on a good surface. An automobile floor-mat, a piece of carpet, or some sturdy cardboard will ease the stress on your knees while you hook up the PTO.
Once you have the splines aligned, press the locking pin button or pull back on the ball-lock collar and push the shaft onto the PTO. If it is stubborn to slide, sometimes jiggling the end of the implement PTO shaft up and down will help get it started.
Once started, slide the shaft all the way on – you might hear a click and your button should retract to the original position or your collar will slide forward all the way. To ensure the shaft lock is fully seated, pull back on the shaft with your hands off the button or the collar and it should be impossible to remove.
With these simple tips, you can make PTO shaft hookups less time-consuming and move you faster to getting done what needs to be done.
If you need any further help or have any questions about service, tractors, implements, or anything else equipment-related, please contact your dealer, local mechanic, or call us at 602-734-9944. Please ask about our current new and used tractor supply.
If you are looking for old, vintage, classic, or new tractor parts, send us a part request.
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